Microsoft Has Sold 4 Million Windows 8 Upgrades So Far

Microsoft CEO Steve Ballmer recently revealed that his company has already sold 4 million upgrades to Windows 8 since its launch on Oct. 26. Ballmer is currently speaking in Seattle at the Build 2012 conference for developers. We’ll update this story as additional details are revealed, if at all. We’ve really enjoyed the Windows 8 experience so far and appreciate that Microsoft has a new focus on touchscreen support in tablets, PCs and laptops. Have you upgraded yet? What do you think so far?